Isomerization process and apparatus

Details Isomerization process and apparatus Isomerization process and apparatus

C - Chemistry, Metallurgy

07

C

23/400, 260/713.

C07C 5/22 (2006.01) C07C 7/12 (2006.01) C07C 9/16 (2006.01) C10G 65/04 (2006.01)

Patent

CA 1314568

ISOMERIZATION PROCESS AND APPARATUS ABSTRACT OF THE DISCLOSURE Processing and apparatus are provided for upgrading the octane of a mixed hydrocarbon gasoline feedstock by an integrated adsorption-isomerization process which catalytically isomerizes normal paraffinic hydrocarbons and concentrates non-normals in a product stream, in both the reactor-lead and adsorber-lead configuration. The process includes passing an adsorber feed stream comprising hydrogen as well as hydrocarbons to an adsorbent bed to adsorb normal hydrocarbons. The hydrogen is preferably obtained from a hot hydrogen-containing process stream which is not cooled or separated into component parts prior to forming the adsorber feed. In some embodiments, the hot-hydrogen containing stream comes from reactor effluent and in others from desorption effluent. According to the invention, the only hydrogen which will require cooling and separation from a hydrocarbon component is that which is recycled for desorption. The invention provides improved energy efficiency and can reduce equipment size and complexity.

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